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TLS 1.1  Should I use QWORD or DWORD and what ciphers should be added ?

Posted on 2014-11-10
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Last Modified: 2014-11-11
Windows 2008 R2 server, IIS 7.0.  I turned off the SSL 3.0 and turned on the TLS 1.1 in the registiry using the Microsoft instructions.  They scanned the server again and they are saying it's still  vunerable.

I used QWORD in the registry settings instead of DWORD since it's a 64 bit operating system.  Is QWORD Correct?

I was not sure if there were specific ciphers I needed to turn off also that may still be causing the problem?
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Question by:kdschool
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by:David Johnson, CD, MVP
David Johnson, CD, MVP earned 100 total points
ID: 40434259
they should be DWORD not QWORD
set-perfectFSecutity.ps1.txt
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btan earned 400 total points
ID: 40434303
indeed it is DWORD (32-bit) Value for client and server. And collectively do reference to Microsoft security advisory for the mitigation of the recent SSLv3 Poodle vulnerability. Note there are previous vulnerability such as BEAST which is along the line for disabling SSL v3 too. check out the browser setting and it will be good to push down as GPO to all managed machines and manually configure it for the standalone machine

https://technet.microsoft.com/en-us/library/security/3009008.aspx

You can also catch the screenshot steps below.

https://www.digicert.com/ssl-support/iis-disabling-ssl-v3.htm
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by:Simon Butler (Sembee)
ID: 40434472
I gave up using manual registry entries.
Try this free tool instead:

https://www.nartac.com/Products/IISCrypto/

Simon.
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Expert Comment

by:btan
ID: 40434508
there is also some sharing of key note running reg, pls see in SAN posting (esp the feedbacks)
https://isc.sans.edu/forums/diary/POODLE+Turning+off+SSLv3+for+various+servers+and+client/18837
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Author Closing Comment

by:kdschool
ID: 40435786
Can't use a tool through the firewall.  Thank you so much for the images.  That was spot on.
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